Nikon D750 User Manual page 386

Option
Press the Fn button to jump to the top item in "MY
Access top item
6 MENU. " Select this option for quick access to a
in MY MENU
frequently-used menu item.
Fn button performs same function as K button.
Select when using a telephoto lens or in other
K Playback
circumstances in which it is difficult to operate
the K button with your left hand.
None Pressing the button has no effect.
A Incompatible Options
If the option selected for Press can not be used in combination with
the option selected for Press + command dials, a message will be
displayed and whichever of Press or Press + command dials was
selected first will be set to None.
358
Description